c# - Function host is not running

Question

I have a Function App in azure and when I hit the URL of the function app it says "Function host is not running." I am not sure where I have to check and what needs to be changed. I tried restart but still no luck.

Answer 1

This usually means that there is some bad configuration in your function app which is causing the host to fail to start up. Things like having an invalid host.json or an invalid proxies.json file are a possible cause.

To diagnose, it's best to look at the function host logs. If you open your function app in the Azure portal and turn on log streaming, you should be able to get more information about what's going on.

If you're not able to find anything, please let us know the name of your function app either publicly or privately and we can help take a look at the logs for you.